1c6f26ecaa
The bead description mentioned compile errors in hash.rs from API drift, but those errors were either already fixed or misattributed. The API usage was already correct: - compute_fingerprint already takes 3 arguments with source - len() already propagates Result with ? - read_at method already used correctly - Catalog fields accessed via trailer correctly Only cleanup: removed unused std::fs::File and std::io imports. Verification: notes/bf-4mkhv.md
48 lines
1.9 KiB
Rust
48 lines
1.9 KiB
Rust
//! Debug script to check content stream normalization
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use pdftract_core::document::parse_pdf_file;
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use pdftract_core::fingerprint::{hash_content_streams, ContentStreamData};
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use pdftract_core::parser::xref::XrefResolver;
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use std::path::Path;
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fn main() {
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let v1_path = Path::new("tests/fingerprint/fixtures/content_edit_one_glyph/v1.pdf");
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let v2_path = Path::new("tests/fingerprint/fixtures/content_edit_one_glyph/v2.pdf");
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// Parse both PDFs
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let (fp1, _cat1, _pages1, resolver1) = parse_pdf_file(v1_path).unwrap();
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let (fp2, _cat2, _pages2, resolver2) = parse_pdf_file(v2_path).unwrap();
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println!("v1 fingerprint: {}", fp1);
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println!("v2 fingerprint: {}", fp2);
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println!("Fingerprints match: {}", fp1 == fp2);
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// Now let's manually check the content stream hash
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// We need to get the content stream references and source
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let source = Box::new(pdftract_core::parser::stream::ParserFileSource::open(v1_path).unwrap());
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// Get the page content streams
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let pages1 = &_pages1;
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let pages2 = &_pages2;
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if let Some(page1) = pages1.first() {
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let streams1: Vec<ContentStreamData> = page1.contents
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.iter()
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.map(|&obj_ref| ContentStreamData::Indirect(obj_ref))
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.collect();
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let hash1 = hash_content_streams(&streams1, &resolver1, Some(&*source));
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println!("v1 content hash: {:?}", hex::encode(hash1));
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}
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let source2 = Box::new(pdftract_core::parser::stream::ParserFileSource::open(v2_path).unwrap());
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if let Some(page2) = pages2.first() {
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let streams2: Vec<ContentStreamData> = page2.contents
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.iter()
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.map(|&obj_ref| ContentStreamData::Indirect(obj_ref))
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.collect();
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let hash2 = hash_content_streams(&streams2, &resolver2, Some(&*source2));
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println!("v2 content hash: {:?}", hex::encode(hash2));
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}
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}
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